what is a "good" question?

Mar 20 2013:
1. Something that can't immediately be answered by everyone/anyone (google it)
2. Something that is based on the foundation that you actually want an answer.
3. Something thats clear and precise.
4. Something relatively original and not frequently asked/repeated.

I would assume those would be the more obvious parameters, atleast thats what I think.

Mar 21 2013:
they usually say it because they don't have an answer and they need a few seconds to find a way out. not sure if you noticed, but most answers that follow a "very good question" remark are very vague

Mar 19 2013:
Good question is this one (yours), Anyone who is here has really asked himself "What is a good question". Good question is only if you make interlocutors to get interested in your question.